Google has been very open with the fact that site speed is an important ranking factor. It improves the user experience and it lets Google scrape the site more often. If you are building a PBN that last factor is important. Getting your sites continuously scraped and indexed by Google is important.
Features that creates super fast page speed using Cloudrock:
Reduces the size of images
This is done automatically in the background when your team uploads new images. No matter which kind of theme you are using.
Uses static cache of sites
All sites are created as static cached versions. This means that the user (or the Google bot) doesn’t have to wait for database queries or php-programs to run. All pages are delivered at an instant.